Side by side comparison and review of Sennheiser MOMENTUM Free and OPPO Enco W51. Compare design, sound quality and other key specifications and features to simplify the choice of your perfect headphones. Our goal is to make it easier for you to decide on the headphones that will best meet your expectations by revealing the main differences between the products.
| DESIGN AND DIMENSIONS | Sennheiser MOMENTUM Free | OPPO Enco W51 |
|---|
| Product Type | Earphones - Bluetooth - wireless | True wireless earphones - Bluetooth - wireless | |
|---|---|---|---|
| Weight | 40 g | 55.5 g | Sennheiser MOMENTUM Free are lighter than Sennheiser MOMENTUM Free headphones. |
| Colour | Black, red | White floral | Starry blue | |
| Earpad Material | Stainless steel | - | |
| Protection | - | Dust-resistant, IP54, water-resistant | |
| Recommended Use | Portable electronics | Portable electronics | |
| Bluetooth Range (Operating Distance) | 10 m | 10 m | The maximum operating distance of both headphones is the same. |
| SOUND QUALITY | Sennheiser MOMENTUM Free | OPPO Enco W51 |
|---|
| Headphones Form Factor | In-ear | In-ear | |
|---|---|---|---|
| Headphones Technology | Dynamic | Dynamic | |
| Connectivity Technology | Wireless | Wireless | |
| Wireless Technology | Bluetooth | Bluetooth | |
| Bluetooth Version | Bluetooth 4.2 | Bluetooth 5.0 | OPPO Enco W51 have a more advanced version of Bluetooth than Sennheiser MOMENTUM Free. |
| Bluetooth Profiles | Hands-Free Profile (HFP), Headset Profile (HSP), Advanced Audio Distribution Profile (A2DP), Audio/Video Remote Control Profile (AVRCP) | - | |
| Bluetooth Audio Codec | SBC, AAC, aptX, apt-X LL | - | |
| Active Noise Cancelling | - | Yes | OPPO Enco W51 are equipped with active noice cancellation. |
| Sound Output Mode | Stereo | Stereo | |
| Frequency Response | 15 - 22000 Hz | 20 - 20000 Hz | Sennheiser MOMENTUM Free offer a larger frequency range than OPPO Enco W51. |
| Total Harmonic Distortion (THD) | <0.5% | - | |
| Sensitivity | 118 dB | 103 dB | Sennheiser MOMENTUM Free have higher sensitivity than OPPO Enco W51. |
| Impedance | 28 Ohm | - | |
| Max Sound Pressure | 112 dB | - | |
| Diaphragm | - | 7 mm | |
| Simultaneously Connectable Devices Qty (Multipoint) | 2 | - | Sennheiser MOMENTUM Free have the ability to connect to multiple devices simultaneously. |
| Features | Voice control | - |
| MICROPHONE | Sennheiser MOMENTUM Free | OPPO Enco W51 |
|---|
| Form Factor | - | Built-in | |
|---|---|---|---|
| Type | On-cable | - | |
| Microphone Operation Mode | Omni-directional | - | |
| Sensitivity | -44 dBV/Pascal | -38 dBV/Pascal |
| REMOTE CONTROL | Sennheiser MOMENTUM Free | OPPO Enco W51 |
|---|
| Controls | Volume, answer/end, next/previous track, reject call | - |
|---|
| CABLE | Sennheiser MOMENTUM Free | OPPO Enco W51 |
|---|
| Cable Type | USB charge cable - detachable | - |
|---|
| BATTERY AND CHARGING | Sennheiser MOMENTUM Free | OPPO Enco W51 |
|---|
| Battery Type | Headphone battery rechargeable - Lithium Ion | Headphone battery rechargeable - Lithium Ion | |
|---|---|---|---|
| Battery Capacity | 86 mAh | 25 mAh | Sennheiser MOMENTUM Free have a higher battery capacity than OPPO Enco W51. |
| Battery Life | 6 hour(s) | 4 hour(s) | Sennheiser MOMENTUM Free lasts longer on a single charge than the OPPO Enco W51. |
| Battery Life Details | - | Continuous playback (noise cancelling OFF / cable connection): up to 24 hours Continuous playback (noise cancelling ON / cable connection): up to 20 hours Continuous playback (noise cancelling OFF): up to 4 hours Continuous playback (noise cancelling ON): up to 3.5 hours |
|
| Charging Time | 1.5 hour(s) | - | |
| Included Qty | - | 2 |
| OTHERS | Sennheiser MOMENTUM Free | OPPO Enco W51 |
|---|
| Included Accessories | Carrying case, 4 pairs of ear tips (XS, S,M, L) | Charging case (480 mAh) |
|---|
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